UNITS(1) General Commands Manual UNITS(1)NAME
units - conversion program
SYNOPSIS
units [ -v ] [ file ]
DESCRIPTION
Units converts quantities expressed in various standard scales to their equivalents in other scales. It works interactively in this fash-
ion:
you have: inch
you want: cm
* 2.54
/ 0.393701
A quantity is specified as a multiplicative combination of units and floating point numbers. Operators have the following precedence:
+ - add and subtract
* / x -:- multiply and divide
catenation multiply
2 3 ^ exponentiation
| divide
( ... ) grouping
Most familiar units, abbreviations, and metric prefixes are recognized, together with a generous leavening of exotica and a few constants
of nature including:
pi,n ratio of circumference to diameter
c speed of light
e charge on an electron
g acceleration of gravity
force same as g
mole Avogadro's number
water pressure head per unit height of water
au astronomical unit
The is a unit of mass. Compound names are run together, e.g. British units that differ from their US counterparts are prefixed thus: Cur-
rency is denoted etc.
The complete list of units can be found in /lib/units. A file argument to units specifies a file to be used instead of /lib/units. The -v
flag causes units to print its entire database.
EXAMPLE
you have: 15 pounds force/in2
you want: atm
* 1.02069
/ .97973
FILES
/lib/units
SOURCE
/sys/src/cmd/units.y
BUGS
Since units does only multiplicative scale changes, it can convert Kelvin to Rankine but not Centigrade to Fahrenheit.
Currency conversions are only as accurate as the last time someone updated /lib/units.
UNITS(1)
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UNITS(1) General Commands Manual UNITS(1)NAME
units - conversion program
SYNOPSIS
units
DESCRIPTION
Units converts quantities expressed in various standard scales to their equivalents in other scales. It works interactively in this fash-
ion:
You have: inch
You want: cm
* 2.54000e+00
/ 3.93701e-01
A quantity is specified as a multiplicative combination of units optionally preceded by a numeric multiplier. Powers are indicated by suf-
fixed positive integers, division by the usual sign:
You have: 15 pounds force/in2
You want: atm
* 1.02069e+00
/ 9.79730e-01
Units only does multiplicative scale changes. Thus it can convert Kelvin to Rankine, but not Centigrade to Fahrenheit. Most familiar
units, abbreviations, and metric prefixes are recognized, together with a generous leavening of exotica and a few constants of nature
including:
pi ratio of circumference to diameter
c speed of light
e charge on an electron
g acceleration of gravity
force same as g
mole Avogadro's number
water pressure head per unit height of water
au astronomical unit
`Pound' is a unit of mass. Compound names are run together, e.g. `lightyear'. British units that differ from their US counterparts are
prefixed thus: `brgallon'. Currency is denoted `belgiumfranc', `britainpound', ...
For a complete list of units, `cat /usr/lib/units'.
FILES
/usr/lib/units
BUGS
Don't base your financial plans on the currency conversions.
UNITS(1)
I have a new challenge that I need some help with. Each morning I have two files that contain working units and failed units that I join together to form file3 which is FTP to server for comparison against billing system.
My problem, I would like to take joined data in file3 and add a field... (2 Replies)